Effects of Soil Conditioner and Bio-organic Fertilizer on Soil Acidity and Heavy Metal Content in Peanut Field
In order to explore the effects of applying different soil conditioners and fertilizers on soil physical and chemical properties,yield and heavy metal content in peanut fields,in the spring of 2021,peanuts were used as a test crop in Pan-dian Village,Wentuan Town,Junan County,and 7 soil conditioners and bio-organic fertilizers were set up,with N(Formula fertilizer 250 kg/hm2),CN(Formula fertilizer 250 kg/hm2+calcium soil conditioner 500 kg/hm2),NS(Formula fertilizer 250 kg/hm2+silicon-calcium-potassium-magnesium fertilizer 500 kg/hm2),NM(Formula fertilizer 250 kg/hm2+bio-or-ganic fertilizer 500 kg/hm2),CMN(Formula fertilizer 250 kg/hm2+calcium soil conditioner 500 kg/hm2+biological orga-nic fertilizer 500 kg/hm2),MNS(Formula fertilizer 250 kg/hm2+silicon,potassium and magnesium fertilizer 500 kg/hm2+biological organic fertilizer 500 kg/hm2),CMNS(Formula fertilizer 250 kg/hm2+calcium soil conditioner 500 kg/hm2+silicon,potassium and magnesium fertilizer 500 kg/hm2+biological organic fertilizer 500 kg/hm2),the effects of different fertilization models on improving acidified soil and increasing production in peanut fields were compare and evaluated.The results showed that formula fertilizers combined with silicon-calcium-potassium-magnesium fertilizers,calcium soil condi-tioners and bio-organic fertilizers could increase soil pH.The MNS treatment had the best effect,and the soil pH value sig-nificantly increased by 11.95%compared with the control.NS,CN and MN treatments significantly increased by 9.76%,4.18%and 3.19%respectively.Formulated fertilizers combined with silicon-calcium-potassium-magnesium fertilizers,bio-organic fertilizers and calcium soil conditioners can effectively reduce the Cr content in soil.In terms of economic be-nefits,the treatment of applying formula fertilizer,silicon-calcium-potassium-magnesium fertilizer and biological organic fertilizer(MNS)had the best effect,and its income was 3 891.6 yuan/hm2 higher than that of the control treatment.This study can provide reference for soil improvement and soil fertility improvement in acidified peanut fields.
万方数据
维普
